Based on responses to questions about marital status and number of marriages, we found the proportion of the population at each age that had never married, was in a first marriage, was widowed, or was in a situation in which a first marriage had ended. That last group combines people who responded they were divorced, separated from their spouse, or in a second, third, or later marriage.

In 2017, about 10% of 30-year-olds had already ended one marriage. The proportion of people who were divorced, separated, or married multiple times maxed out at age 63 when about 41.5% of respondents fell into this category. That was just shy of the 42.1% of 62-year-olds who were in their first marriage:

We also compared the 2017 proportions of people who were divorced, separated, or married multiple times to those proportions from earlier decades. The 1960 and 1980 Census long form survey, the predecessor of the American Community Survey, also included questions about marital status and number of marriages.

The results were interesting: In 1960 and 1980, a higher proportion of 20-somethings had a marriage end than in 2016. More people were divorced, separated, or in second or third marriages by their late 20s or early 30s in 1960 and 1980 than in 2017.

On the other hand, older Americans have been more likely to fall in this category in recent years: In 2017: respondents in their mid-40s and older were far more likely to be divorced, separated, or in a later marriage than people of an equivalent age in earlier decades: